Energy
New paper shows clouds are more important than CO2

From Clintel.org
By Vijay Jayaraj
Underestimating Clouds: A Climate Mistake We Cannot Afford
A new paper by physicists W. A. van Wijngaarden and William Happer, Radiation Transport in Clouds, suggests that clouds affect atmospheric temperature more than CO2, says Vijay Jayaray of the CO2 Coalition.
Carbon dioxide (CO₂) has been predominantly portrayed as the chief culprit driving global warming. For decades, this misconception has guided international policies, prompted ambitious targets for reducing CO2 emissions and driven a shift from reliable and affordable energy resources like coal, oil, and natural gas toward problematic wind and solar sources.
However, this theory overlooks important factors that influence Earth’s climate system, including a critical variable in the climate system – the role of clouds, which remains woefully underestimated.
Recent work by physicists W. A. van Wijngaarden and William Happer challenges this prevailing paradigm: Their new paper, Radiation Transport in Clouds, suggest clouds affect atmospheric temperature more than CO2 because they have a greater impact on the comparative amounts of solar energy entering Earth’s atmosphere and escaping to outer space.
The Overshadowed Influence of Clouds
Clouds simultaneously reflect incoming sunlight back to space (cooling the Earth) and trap outgoing heat (warming the Earth). This dual nature makes clouds both powerful and perplexing players in our climate system. The net effect of clouds on climate is a balance between these opposing influences, thus a central component of the Earth’s energy budget.
A recent study by van Wijngaarden and Happer, titled “Radiation Transport in Clouds,” delves into this complexity. The 2025 paper says the radiation effects of clouds can easily negate or amplify the impact of CO2. The researchers highlight that clouds have a more pronounced effect on Earth’s radiation budget than greenhouse gases like CO₂.
For instance, their research reveals that a modest decrease in low cloud cover could significantly increase solar heating of the Earth’s surface. In comparison, a doubling of atmospheric CO2 concentrations reduces radiation to space by a mere 1%: “Instantaneously doubling CO₂ concentrations, a 100% increase, only decreases radiation to space by about 1%. To increase solar heating of the Earth by a few percent, low cloud cover only needs to decrease by a few percent.”
This stark contrast highlights the disproportionate influence of cloud dynamics compared to CO2 fluctuations. Most state-of-art climate models are still in their infancy. We need more accurate measurements of clouds’ properties and their influence on the electromagnetic components of solar radiation if they are to be useful inputs for climate models.
Implications for Energy Policy and Reliability
Current strategies assume a direct and dominant link between CO2 emissions and global temperatures to justify aggressive “decarbonization” efforts and an increase in the use of solar and wind energy.
However, solar and wind are inherently intermittent, rendering them unreliable and very expensive as components of a power grid. The infrastructure required to support these technologies entails substantial upfront investments, higher operating costs and increasing utility bills for consumers.
Blackouts, energy shortages and price spikes are becoming increasingly common in regions that have prematurely decommissioned fossil fuel plants without adequate backup solutions. This trend disproportionately affects vulnerable populations, exacerbating energy poverty and hindering economic development.
The major justification for using solar and wind has been that they counter global warming by reducing CO2 emissions from burning fossil fuels. If small variations in cloud cover actually overwhelm the effects of CO2, then the climate’s sensitivity to greenhouse gases is being significantly overestimated. This has profound implications for policy.
Attributing global warming predominantly to CO₂ emissions from the use of fossil fuels is a gross oversimplification. While CO2 undoubtedly has a warming effect, it is relatively modest and beneficial, mainly moderating the difference between daytime and nighttime temperatures. On the other hand, clouds, with their multifaceted interactions and feedbacks, represent a critical and underappreciated component of this puzzle.
The findings of van Wijngaarden and Happer highlight a broader issue within climate science: the tendency to oversimplify complex systems for the sake of political expediency. As the global energy landscape continues to evolve, it is imperative that decisions be based on sound science rather than political dogma.
The time has come to reassess our approach to both climate science and energy policy. The stakes are too high to continue down a path of destructive policies based on erroneous analyses. We must prioritize reliable, affordable energy sources and grid stability over useless reductions in emissions of a harmless gas.
Click here to access the entire Radiation Transport in Clouds paper.
This commentary was first published at BizPac Review on February 10, 2025
Bjorn Lomborg
How Canada Can Respond to Climate Change Smartly

From the Fraser Institute
At a time when public finances are strained, and Canada and the world are facing many problems and threats, we need to consider policy choices carefully. On climate, we should spend smartly to solve it effectively, making sure there is enough money left over for all the other challenges.
A sensible response to climate change starts with telling it as it is. We are bombarded with doom-mongering that is too often just plain wrong. Climate change is a problem but it’s not the end of the world.
Yet the overheated rhetoric has convinced governments to spend taxpayer funds heavily on subsidizing current, inefficient solutions. In 2024, the world spent a record-setting CAD$3 trillion on the green energy transition. Taxpayers are directly and indirectly subsidizing millions of wind turbines and solar panels that do little for climate change but line the coffers of green energy companies.
We need to do better and invest more in the only realistic solution to climate change: low-carbon energy research and development. Studies indicate that every dollar invested in green R&D can prevent $11 in long-term climate damages, making it the most effective long-term global climate policy.
Throughout history, humanity has tackled major challenges not by imposing restrictions but by innovating and developing transformative technologies. We didn’t address 1950s air pollution in Los Angeles by banning cars but by creating the catalytic converter. We didn’t combat hunger by urging people to eat less, but through the 1960s Green Revolution that innovated high-yielding varieties to grow much more food.
In 1980, after the oil price shocks, the rich world spent more than 8 cents of every $100 of GDP on green R&D to find energy alternatives. As fossil fuels became cheap again, investment dropped. When climate concern grew, we forgot innovation and instead the focus shifted to subsidizing existing, ineffective solar and wind.
In 2015, governments promised to double green R&D spending by 2020, but did no such thing. By 2023, the rich world still wasn’t back to spending even 4 cents out of every $100 of GDP.
Globally, the rich world spends just CAD$35 billion on green R&D — one-hundredth of overall “green” spending. We should increase this four-fold to about $140 billion a year. Canada’s share would be less than $5 billion a year, less than a tenth of its 2024 CAD$50 billion energy transition spending.
This would allow us to accelerate green innovation and bring forward the day green becomes cheaper than fossil fuels. Breakthroughs are needed in many areas. Take nuclear power. Right now, it is way too expensive, largely because extensive regulations force the production of every new power plant into what essentially becomes a unique, eye-wateringly expensive, extravagant artwork.
The next generation of nuclear power would work on small, modular reactors that get type approval in the production stage and then get produced by the thousand at low cost. The merits of this approach are obvious: we don’t have a bureaucracy that, at a huge cost, certifies every consumer’s cellphone when it is bought. We don’t see every airport making ridiculously burdensome requirements for every newly built airplane. Instead, they both get type-approved and then mass-produced.
We should support the innovation of so-called fourth-generation nuclear power, because if Canadian innovation can make nuclear energy cheaper than fossil fuels, everyone in the world will be able to make the switch—not just rich, well-meaning Canadians, but China, India, and countries across Africa.
Of course, we don’t know if fourth-generation nuclear will work out. That is the nature of innovation. But with smarter spending on R&D, we can afford to focus on many potential technologies. We should consider investing in innovation to grow hydrogen production along with water purification, next-generation battery technology, growing algae on the ocean surface producing CO₂-free oil (a proposal from the decoder of the human genome, Craig Venter), CO₂ extraction, fusion, second-generation biofuels, and thousands of other potential areas.
We must stop believing that spending ever-more money subsidizing still-inefficient technology is going to be a major part of the climate solution. Telling voters across the world for many decades to be poorer, colder, less comfortable, with less meat, fewer cars and no plane travel will never work, and will certainly not be copied by China, India and Africa. What will work is innovating a future where green is cheaper.
Innovation needs to be the cornerstone of our climate policy. Secondly, we need to invest in adaptation. Adaptive infrastructure like green areas and water features help cool cities during heatwaves. Farmers already adapt their practices to suit changing climates. As temperatures rise, farmers plant earlier, with better-adapted varieties or change what they grow, allowing the world to be ever-better fed.
Adaptation has often been overlooked in climate change policy, or derided as a distraction from reducing emissions. The truth is it’s a crucial part of avoiding large parts of the climate problem.
Along with innovation and adaptation, the third climate policy is to drive human development. Lifting communities out of poverty and making them flourish is not just good in and of itself — it is also a defense against rising temperatures. Eliminating poverty reduces vulnerability to climate events like heat waves or hurricanes. Prosperous societies afford more healthcare, social protection, and investment in climate adaptation. Wealthy countries spend more on environmental preservation, reducing deforestation, and promoting conservation efforts.
Focusing funds on these three policy areas will mean Canada can help spark the breakthroughs that are needed to lower energy costs while reducing emissions and making future generations around the world more resilient to climate and all the other big challenges. The path to solving climate change lies in innovation, adaptation, and building prosperous economies.
Business
Net Zero by 2050: There is no realistic path to affordable and reliable electricity

By Dave Morton of the Canadian Energy Reliability Council.
Maintaining energy diversity is crucial to a truly sustainable future
Canada is on an ambitious path to “decarbonize” its economy by 2050 to deliver on its political commitment to achieve net-zero greenhouse gas (GHG) emissions. Although policy varies across provinces and federally, a default policy of electrification has emerged, and the electricity industry, which in Canada is largely owned by our provincial governments, appears to be on board.
In a November 2023 submission to the federal government, Electricity Canada, an association of major electric generators and suppliers in Canada, stated: “Every credible path to Net Zero by 2050 relies on electrification of other sectors.” In a single generation, then, will clean electricity become the dominant source of energy in Canada? If so, this puts all our energy eggs in one basket. Lost in the debate seem to be considerations of energy diversity and its role in energy system reliability.
What does an electrification strategy mean for Canada? Currently, for every 100 units of energy we consume in Canada, over 40 come to us as liquid fuels like gasoline and diesel, almost 40 as gaseous fuels like natural gas and propane, and a little less than 20 in the form of electrons produced by those fuels as well as by water, uranium, wind, solar and biomass. In British Columbia, for example, the gas system delivered approximately double the energy of the electricity system.
How much electricity will we need? According to a recent Fraser Institute report, a decarbonized electricity grid by 2050 requires a doubling of electricity. This means adding the equivalent of 134 new large hydro projects like BC’s Site C, 18 nuclear facilities like Ontario’s Bruce Power Plant, or installing almost 75,000 large wind turbines on over one million hectares of land, an area nearly 14.5 times the size of the municipality of Calgary.
Is it feasible to achieve a fully decarbonized electricity grid in the next 25 years that will supply much of our energy requirements? There is a real risk of skilled labour and supply chain shortages that may be impossible to overcome, especially as many other countries are also racing towards net-zero by 2050. Even now, shortages of transformers and copper wire are impacting capital projects. The Fraser Institute report looks at the construction challenges and concludes that doing so “is likely impossible within the 2050 timeframe”.
How we get there matters a lot to our energy reliability along the way. As we put more eggs in the basket, our reliability risk increases. Pursuing electrification while not continuing to invest in our existing fossil fuel-based infrastructure risks leaving our homes and industries short of basic energy needs if we miss our electrification targets.
The IEA 2023 Roadmap to Net Zero estimates that technologies not yet available on the market will be needed to deliver 35 percent of emissions reductions needed for net zero in 2050. It comes then as no surprise that many of the technologies needed to grow a green electric grid are not fully mature. While wind and solar, increasingly the new generation source of choice in many jurisdictions, serve as a relatively inexpensive source of electricity and play a key role in meeting expanded demand for electricity, they introduce significant challenges to grid stability and reliability that remain largely unresolved. As most people know, they only produce electricity when the wind blows and the sun shines, thereby requiring a firm back-up source of electricity generation.
Given the unpopularity of fossil fuel generation, the difficulty of building hydro and the reluctance to adopt nuclear in much of Canada, there is little in the way of firm electricity available to provide that backup. Large “utility scale” batteries may help mitigate intermittent electricity production in the short term, but these facilities too are immature. Furthermore, wind, solar and batteries, because of the way they connect to the grid don’t contribute to grid reliability in the same way the previous generation of electric generation does.
Other zero-emitting electricity generation technologies are in various stages of development – for example, Carbon Capture Utilization and Storage (CCUS) fitted to GHG emitting generation facilities can allow gas or even coal to generate firm electricity and along with Small Modular Reactors (SMRs) can provide a firm and flexible source of electricity.
What if everything can’t be electrified? In June 2024, a report commissioned by the federal government concluded that the share of overall energy supplied by electricity will need to roughly triple by 2050, increasing from the current 17 percent to between 40 and 70 percent. In this analysis, then, even a tripling of existing electricity generation, will at best only meet 70 percent of our energy needs by 2050.
Therefore, to ensure the continued supply of reliable energy, non-electrification pathways to net zero are also required. CCUS and SMR technologies currently being developed for producing electricity could potentially be used to provide thermal energy for industrial processes and even building heat; biofuels to replace gasoline, diesel and natural gas; and hydrogen to augment natural gas, along with GHG offsets and various emission trading schemes are similarly
While many of these technologies can and currently do contribute to GHG emission reductions, uncertainties remain relating to their scalability, cost and public acceptance. These uncertainties in all sectors of our energy system leaves us with the question: Is there any credible pathway to reliable net-zero energy by 2050?
Electricity Canada states: “Ensuring reliability, affordability, and sustainability is a balancing act … the energy transition is in large part policy-driven; thus, current policy preferences are uniquely impactful on the way utilities can manage the energy trilemma. The energy trilemma is often referred to colloquially as a three-legged stool, with GHG reductions only one of those legs. But the other two, reliability and affordability, are key to the success of the transition.
Policymakers should urgently consider whether any pathway exists to deliver reliable net-zero energy by 2050. If not, letting the pace of the transition be dictated by only one of those legs guarantees, at best, a wobbly stool. Matching the pace of GHG reductions with achievable measures to maintain energy diversity and reliability at prices that are affordable will be critical to setting us on a truly sustainable pathway to net zero, even if it isn’t achieved by 2050.
Dave Morton, former Chair and CEO of the British Columbia Utilities Commission (BCUC), is with the Canadian Energy Reliability Council.
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